This morning - Disgaea 3
And b4 that, Last Night - Little Big Planet, then Disgaea3 till about 2:40am.
And now I'm stuck at work.... :(
EDIT: If you're talking about replaying for fun,
Two days ago I started Burnout Paradise over again had a BLAST.
The day b4 I started MGS4 over again on BigBoss Hard.
EDIT2: Oh, and I've beaten the PS2 version of Resident Evil 4 atleast 12 times!!! One of the best games ever IMO.
4 ≈ One